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Thread: Beam Style Jig

  1. #1
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    Default Beam Style Jig

    Anyone using one? I'm currently using an Alex Meade set-up and it has worked well with only a few hinderances. I was going to convert some of my blocks to attach to the extrusion for various uses and machine some other small items. Given my space constraints, it seems to make sense. I would also have more access to the frame at all angles. I sat down with a buddy and worked something up in solidworks and this is what we came up with. Head tube would remain fixed at 90 degrees and everything would be slowly built up in sections. The rear tower can move forwards or backwards.....or out of the way altogether. My biggest problem with the Meade blocks is rear ends.......they come out fine, but very time consuming. If you've used this style jig, can you please shed some light on what your experience was/is.


    Beam Jig.JPG
     

  2. #2
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    Default Re: Beam Style Jig

    Dave Porter did a nice write up a while back detailing the use of his Morroni beam jig Using a Pino Morroni Frame Jig. I have the tandem version of that jig and I like it a lot. Great access and very versatile.
    Looking at your design, I think I'd like the jig to hold the ht at the right angle, more intuitive to set up.

  3. #3
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    Default Re: Beam Style Jig

    A lot of BMX companies use beam style jigs for production, theirs have limited range of adjustment but work well and offer a lot of access. Here's the one FBM uses:

    Many motorcycle frame jigs are made in this way, might find some inspiration searching through images of those, here's one from a home made jigs thread on MTBR:
    Seth Rosko
    Rosko Cycles
    New York City
    www.rosko.cc

  4. #4
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    Default Re: Beam Style Jig

    Looking at your drawing design, I would say you might like to put the bb a bit higher so to have better access to this ares from more positions, so it helps out for tacking and any other possible action you might want to do around the bb. Apart from that, looks like a nice design with plenty of access to the whole frame without restrictions, wich is nice.

    Cheers
    Aimar Fraga Angoitia
    www.amarobikes.com

  5. #5
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    Default Re: Beam Style Jig

    Quote Originally Posted by Amaro Bikes View Post
    Looking at your drawing design, I would say you might like to put the bb a bit higher so to have better access to this ares from more positions, so it helps out for tacking and any other possible action you might want to do around the bb. Apart from that, looks like a nice design with plenty of access to the whole frame without restrictions, wich is nice.

    Cheers
    It's not really shown in the image, but the brackets on the wings will be bolted to towers holding the BB exactly 5" above the beam. I was hoping that would be enough room. The head tub will also be exactly 5" away from the beam. All the Alex Meade blocks use 5" as a center line, so that's where that number came from.
     

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